Law Clerk & Chief Operations Officer
Roger Grekos
Roger Grekos is the Law Clerk and Chief Operations Officer at Mayo Law, supporting the firm's practice across its Toronto and New York offices. Experienced in cross-border business and investor immigration matters, including E-2 and EB-5 files. He is also an entrepreneur and founder of technology startups with advisory experience, bringing an engineering and technology background to the operational side of a cross-border legal practice. As a law clerk, Roger works alongside the firm's legal team; legal services are provided by a licensed lawyer.
Languages: English, German, Greek, Arabic, Hebrew · LinkedIn
Experience
- Entrepreneurship
- Business immigration
- E-2 visa
- Compliance
- Business development and administration
- Canadian immigration law
- Legal operations
- Technology
- US immigration law
Areas of focus
Articles by Roger Grekos · 64
Every guide names its author and its dates. As a law clerk, Roger works alongside the firm's legal team; legal services are provided by a licensed lawyer.
- 136Extra-Provincial Registration in Ontario: What Your Corporation Must FileBusiness and Startup LawA corporation that was not created under an Ontario statute, but that starts doing business in Ontario, walks into a filing regime that catches it whether it planned for Ontario or not.
- 135L-1A Visa to Green Card: The EB-1C Route, Costs and Real TimelinesUS Immigration from CanadaMost Canadian managers who ask about the L-1A visa to green card route have already been told the short version: file an EB-1C, skip the labour certification, done.
- 134Canada Sanctions List: What Your Business Must Screen and ReportCross-Border ComplianceMost companies that ask about the Canada sanctions list are really asking a narrower question: is the other side a person we are allowed to deal with?
- 133Fraud Charges in Canada: What Business Owners and Executives FaceWhite Collar DefenseA production order arrives at your bank. A former controller has been interviewed. A regulator asks for three years of invoices and will not say why. Long before anyone is arrested, a Canadian fraud investigation is alre…
- 132Doing Business in Canada: What a US Company Actually TriggersBusiness and Startup LawMost US companies start selling into Canada long before anyone asks a legal question. Orders arrive, a salesperson flies to Toronto, a contractor gets hired in Mississauga, and the first real question surfaces only when …
- 131Non-Compete Agreement Ontario: What the ESA Ban Actually ProhibitsCross-Border ComplianceOntario banned most employment non-competes in 2021, and plenty of contracts in the province still contain one. If yours does, the clause is very likely void, which means the protection you believe you have is not there.…
- 130Can a Canadian Own a Business in the US? Ownership, Control and Work AuthorizationUS Immigration from CanadaCan a Canadian own a business in the US? Yes. United States law sets no citizenship or residency test for holding shares in a US corporation or a membership interest in an LLC. Working in that business on US soil is a se…
- 129Letter of Intent to Purchase a Business: Which Parts Actually Bind YouBusiness and Startup LawMost buyers sign a letter of intent to purchase a business believing it is a handshake on paper. Most sellers sign believing the same thing. Both are usually wrong about at least one clause, and the clause they are wrong…
- 128US Work Visas for Canadians: How to Choose the Right RouteUS Immigration from CanadaThere is no single best answer among the US work visas for Canadians, because the categories were written for different people. A Toronto engineer with a Chicago job offer, a manufacturer opening a Buffalo subsidiary and…
- 127E-2 Visa Change of Status: Why USCIS Grants Status, Not a VisaE-2 Visa for Canadian InvestorsInvestors ask whether they can apply for an E-2 visa from inside the country, are told yes, and assume the result is a visa in the passport. It is not. USCIS grants classification. Consulates issue visas. An E-2 visa cha…
- 126US Notary in Toronto: What US Recipients Actually AcceptNotary and AuthenticationAlmost everyone searching for a US notary in Toronto is solving the problem the wrong way round. You have a document that has to work in the United States: an affidavit for a federal court, a deed or power of attorney fo…
- 125E-1 Treaty Trader Visa: Requirements, Trade Tests and E-1 vs E-2E-2 Visa for Canadian InvestorsThe E-1 treaty trader visa is the quieter half of the E treaty pair. Most people reach the E category thinking about investment, because E-2 takes up most of the oxygen. But if your business already moves goods, services…
- 124L-1 Visa from Canada: Moving Staff to Your US CompanyUS Immigration from CanadaA Canadian company expanding into the United States has to move people, not just capital. The L-1 visa from Canada is the category built for that. It lets a qualifying organization transfer an executive, a manager, or an…
- 123TN Visa for Canadians: Requirements, Professions and How to ApplyUS Immigration from CanadaThe TN visa for Canadians is usually the fastest route from a Canadian job offer to lawful US employment, and the decision is made on the spot, by one officer, on the documents in your hand. It is not really a visa. A Ca…
- 122Can E-2 Visa Holders Work for Another Company? What the Rules AllowE-2 Visa for Canadian InvestorsCan E-2 visa holders work for another company? In almost every case the answer is no, and the reason is structural rather than discretionary. E-2 classification is granted for a named treaty enterprise and for a defined …
- 121E-2 Visa Denial: What a Refusal Means and What to Do NextE-2 Visa for Canadian InvestorsAn E-2 visa denial almost never arrives with an explanation of the law behind it. Most applicants leave the interview window holding a printed slip, a statute number, and no sense of whether the case is finished or merel…
- 120Starting an E-2 Business in New York: Formation Steps, Fees and What Consular Officers CheckE-2 Visa for Canadian InvestorsStarting an E-2 business in New York puts a treaty investor in one of the largest commercial markets in the United States and in one of the more procedural ones. New York has no single registry that handles everything. C…
- 119What Is the E-2 Visa? A Plain-Language Guide to the Treaty Investor VisaE-2 Visa for Canadian InvestorsIf you have been told that buying a business in the United States is a way to move there, the visa people usually mean is the E-2. So what is the E-2 visa? There is a short answer and a long one. The short […]
- 118E-2 Visa Business for Sale: What Actually Qualifies in 2026E-2 Visa for Canadian InvestorsSearching for an E-2 visa business for sale is the most common way Canadian and other treaty-country investors start their move into the United States. Buying something that already trades is attractive because the numbe…
- 117E-2 Visa Spouse Work Authorization: What E-2S Status Actually AllowsE-2 Visa for Canadian InvestorsWhen a Canadian founder moves to the United States on an E-2 visa, the question that decides whether the move works is rarely about the investor. It is about the spouse. E-2 visa spouse work authorization is one of the f…
- 116E-2 Visa Renewal: Extending Your Status Versus Getting a New VisaE-2 Visa for Canadian InvestorsAlmost every question about E-2 visa renewal starts from the same wrong assumption: that there is one thing called a renewal. There are two, they are run by two different agencies, and the one you need depends on where y…
- 115E-2 Visa Countries: The Full Treaty List and What Nationality ControlsE-2 Visa for Canadian InvestorsIf you are researching E-2 visa countries, you are asking the first question that actually decides the case. Everything else about the E-2 visa, the size of the investment, the business plan, the interview, only matters …
- 114E-2 Visa Processing Time: What the Official Numbers Actually SayE-2 Visa for Canadian InvestorsEvery investor asks the same question before committing money to a United States business, and almost every answer online is a range someone made up. The honest position is that the E-2 visa processing time depends entir…
- 113E-2 Visa Interview Questions: How to Prepare and Answer with ConfidenceE-2 Visa for Canadian InvestorsThe E-2 visa interview is the final step between your investment and your visa. You have built the business plan, moved the funds, and filed the forms. Now everything depends on a short conversation with a consular offic…
- 112Shareholder Agreement vs Bylaws: What Each Document Governs in Ontario and New YorkBusiness and Startup LawCorporate by-laws and shareholder agreements answer different questions, and most incorporated businesses eventually need both. By-laws set the internal operating rules of the corporation. A shareholder agreement is a pr…
- 111Canadian Citizenship Requirements for Permanent ResidentsCanadian CitizenshipIt is easy to approach the Canadian citizenship requirements for permanent residents in the wrong order. Applicants count three years on a calendar, book a language test, and only later find out that the days they spent …
- 110Dual Licensed Lawyer Ontario and New York: What It Means for Cross-Border ClientsBusiness and Startup LawA Toronto manufacturer signs a supply agreement with a buyer in Buffalo. New York law governs the contract, the seller is an Ontario corporation, and any dispute would start in a New York court. The company calls its Tor…
- 109Statutory Declaration Ontario: When You Need One and Who Can Take ItBusiness and Startup LawA bank asks for proof that two names on an old share certificate belong to the same person. A US buyer wants written confirmation that a Canadian supplier owns the equipment it is selling. A registry refuses a filing bec…
- 108Moving from Canada to the US: Tax Implications Before You GoCross-Border ComplianceThe tax implications of moving from Canada to the US arrive in a specific order, and the order is what catches people out. Canada settles up with you as of the day you stop being a resident. The United States starts coun…
- 107Who Can Notarize a Document in Ontario?Notary and AuthenticationIf someone tells you they can notarize a document in Ontario, it is worth asking what office they actually hold. The province recognises two different appointments that people mix up constantly, and only one of them is a…
- 106Startup Lawyer Toronto: When Founders Actually Need OneBusiness and Startup LawMost founders search for a startup lawyer in Toronto at one of two moments: right before incorporating, or right after something has gone wrong that incorporating properly would have prevented. The second moment is far m…
- 105Can You Form an LLC in Ontario?Business and Startup LawMany founders who have run a limited liability company in the United States assume they can open the same structure north of the border. They cannot. There is no LLC in Ontario, and there is no LLC anywhere in Canada. On…
- 104American Entrepreneur Visa: U.S. Options for Founders and Investors (2026)US Immigration from CanadaThere is no single American entrepreneur visa. The United States does not issue a visa with that exact name. Instead, founders and investors reach the U.S. market through a group of temporary work visas, a startup parole…
- 103Corporate Lawyer Toronto: A Guide for Cross-Border BusinessesBusiness and Startup LawA corporate lawyer in Toronto advises companies on how they are formed, financed, governed, and eventually sold or wound down. If you run a business that operates in Ontario, or one that crosses the Canada and United Sta…
- 102Corporate Litigation Lawyer: When Your Business Needs OneBusiness and Startup LawA lawsuit lands differently when it names your company. Maybe a supplier walked away from a signed agreement, a former partner is challenging how the business is run, or a regulator has questions you cannot answer alone.…
- 101What Does a Contract Lawyer Do? When Your Business Needs OneBusiness and Startup LawEvery business runs on promises: to customers, suppliers, landlords, employees, and partners. A contract lawyer is the professional who turns those promises into documents that hold, and who reads the other side’s docume…
- 100Do You Need a Lawyer to Incorporate a Business in Canada?Business and Startup LawIncorporating a company in Canada has never been mechanically easier. Ontario’s online registry issues a certificate of incorporation in minutes, and a dozen filing services will happily click the buttons for you. So the…
- 0995 Essential Reasons to Hire Business Lawyers for Your Startup SuccessBusiness and Startup LawIntroduction Every startup makes its most expensive legal decisions in its first year, usually without noticing. The structure chosen at registration, the first client contract, the handshake arrangement with a co-founde…
- 098Legal Services for SMEs: What US-Canada Businesses Actually NeedBusiness and Startup LawMost owners search for legal services for SMEs the same way: something has already happened. A customer will not pay, a hire went wrong, a landlord sent a demand letter, or a big client just asked for a signed data agree…
- 097E-2 Visa Approval Rate: What the State Department Data ShowsE-2 Visa for Canadian InvestorsHow likely is an E-2 application to succeed? The E-2 visa approval rate at U.S. consular posts worked out to 90.1 percent in fiscal year 2024, the most recent full year of official State Department workload data. Consula…
- 090Remote Notary New York: Your Complete 2026 GuideNotary and AuthenticationYou’re in Toronto. The document is governed by New York law. Closing counsel, a bank, an immigration filing, or a family estate matter needs a notarized signature quickly, and you’re trying to work out whether you can si…
- 086Do Sole Proprietors Need an EIN? 2026 Expert GuideBusiness and Startup LawA client sends over onboarding paperwork. A payment platform asks for a taxpayer identification number. Your bank wants business documents before opening an account. If you’re a solo founder, freelancer, or consultant, t…
- 084Document Authentication Services: A U.S. & Canada GuideNotary and AuthenticationA deal is ready to close. An executive is ready to relocate. A foreign bank is ready to open the account. Then a counterparty asks for an apostille or an authenticated corporate document, and the timeline slips. Business…
- 076Private Equity Funds Real Estate: US & Canada Guide 2026Business and Startup LawYou may be at the point where smaller deals no longer move the needle. A GTA developer, family office principal, or operating business owner often gets there after a few successful acquisitions. The next deal is larger, …
- 075Definition Mezzanine Loan: 2026 Guide to Capital & RiskBusiness and Startup LawA financing gap often appears at the worst possible moment. A company is ready to buy a competitor, launch in the other country, or close an asset-backed deal, but the senior lender will not extend more credit and the fo…
- 071What Is Equity Dilution: Equity Dilution ExplainedBusiness and Startup LawYour first term sheet lands in your inbox. You expected to focus on valuation, board seats, and closing timing. Instead, one line keeps pulling your attention back: the round will involve dilution , plus an employee opti…
- 070How Long Does Green Card Process TakeUS Immigration from CanadaIf you’re trying to plan a move, accept a job, keep a family together, or decide whether to renew a lease, the hardest part of the green card process is often the uncertainty. Clients usually don’t ask for an abstract av…
- 069NVCA Term Sheet: A Founder’s Guide for 2026Business and Startup LawA Canadian founder gets a U.S. lead investor's term sheet on Friday afternoon. The price looks acceptable. The investor calls it “standard NVCA.” By Monday, the key questions start. Does the company stay Canadian or rein…
- 065What Is Preferred Stock? Your 2026 GuideBusiness and Startup LawYou’re usually asking what is preferred stock at a very specific moment. A term sheet just arrived. An angel says they want “preferred.” Your accountant mentions dividends. Or you’re comparing a startup financing documen…
- 064Move from Canada to USA: A Legal & Tax Guide for 2026US Immigration from CanadaMost Canadians move to the US through one of four work visa routes: TN, L-1 , E-2, or H-1B . The legal side has two more steps that matter just as much: planning for Canada’s departure tax before you leave, and deciding …
- 057Stock Options Startup: U.S.-Canada Guide 2026Cross-Border ComplianceIf you're hiring across the U.S. and Canada, or weighing an offer that includes equity, the hard part usually isn't the headline grant. It's the consequences. A stock option can look generous in an offer letter and becom…
- 054SEC Registration & Filing Fee 2026: $138.10 per $1MBusiness and Startup LawA CFO is closing a financing on a tight timeline, the board wants a clean budget, and someone asks a basic question late in the process: what is the SEC registration fee for this filing, and when does it have to be paid?…
- 047E-2 Visa Application 2026: Steps, Timeline & DenialsE-2 Visa for Canadian InvestorsYou may already have the business idea, the U.S. target market, and even a shortlist of companies to buy. What usually slows Canadian founders down isn’t ambition. It’s uncertainty about the immigration path, the paperwo…
- 045How to Incorporate a Business in Ontario: A 2026 GuideBusiness and Startup LawYou're probably at the point where the business is real enough that operating as a sole proprietor no longer feels comfortable. A customer wants to contract with a corporation. A partner is coming in. A U.S. founder want…
- 043How to Start a Business in Both Canada and the USBusiness and Startup LawYou may already have the product, the first customers, and a reason to sell on both sides of the border. What usually stalls the plan is not demand. It’s the fear of getting the setup wrong. If you want to start a busine…
- 038E-2 Visa Cost 2026: $6,000-$15,000 Petition Fee BreakdownE-2 Visa for Canadian InvestorsThe E-2 visa cost in 2026 has two distinct components that most applicants confuse: the process cost (government fees, attorney fees, business plan) and the investment cost (the substantial capital you put into your U.S.…
- 036Compliance Officer Responsibilities for U.S. & CanadaCross-Border ComplianceA founder closes a promising U.S. customer. The sales team celebrates. Then procurement sends a vendor packet asking about sanctions screening, privacy controls, employee training, whistleblower reporting, records retent…
- 028How to Get an Apostille in New York | Mayo LawNotary and AuthenticationIf you’re trying to use a New York document in another country, a plain copy usually isn’t enough. Founders expanding into Ontario, families handling overseas adoptions, and individuals proving lineage for citizenship cl…
- 022E-2 Visa Minimum Investment 2026: $100K+ Practical FloorE-2 Visa for Canadian InvestorsIf you’re asking about the E-2 visa minimum investment amount 2026, you’re already asking a better question than most investors. The main issue isn’t whether U.S. law sets a fixed number. It doesn’t. The issue is whether…
- 018Software in Escrow A US-Canada Business Protection GuideBusiness and Startup LawA founder signs a software contract, integrates the platform into finance, sales, or operations, and moves on. Months later, the vendor hits distress, gets acquired, or stops supporting the product. Your team still depen…
- 013E-2 visa vs EB-5 visa which is better: 2026 InsightE-2 Visa for Canadian InvestorsA Canadian founder reaches the same moment. The U.S. customer pipeline is real, the New York or Florida expansion plan is ready, and the immigration question becomes the gating issue. At Mayo Law, this question drives th…
- 0128 Best Businesses for E-2 Visa Approval (2026 Examples)E-2 Visa for Canadian InvestorsYou are ready to enter the U.S. market, but one question keeps controlling the entire E-2 strategy: what business gives you the strongest approval path? For many investors from treaty countries, including Canada, the ans…
- 011Master E-2 Visa Business Plan RequirementsE-2 Visa for Canadian InvestorsA strong E-2 filing often turns on one document: the business plan. If you are a founder in Toronto, Ottawa, or elsewhere in a treaty country and you are preparing to expand into the U.S., the plan is where your business…
- 005Why Founder Vesting is Your “Prenup” for BusinessBusiness and Startup LawOn day one, equity splits feel like a formality. Everyone is excited, the vision is clear, and the vibes are high. But reality has a habit of intervening. Founders burn out, roles shift, or a pivot creates a rift in the …